We report the discovery of a hitherto undetected population of Wolf-Rayet stars in the young galactic open cluster Westerlund 1. Optical spectroscopy of the cluster identified 11 such objects; provisional classification suggests that 6 are nitrogen rich (WN) and 5 carbon rich (WC). Including the previously identified Blue, Yellow & Red Super& Hypergiants, Westerlund 1 clearly has a very rich po...

BACKGROUND Spontaneous coronary artery dissection (SCAD) is a nonatherosclerotic but a rare and extremely dangerous clinical entity, it has a high prevalence in young female population with acute myocardial infarction (AMI). The previous reports were restricted to other countries' population, but rare in China. Hence, this study aimed to focus on the characteristics of SCAD as a cause of young ...

conclusion the prevalence of radiological parameters associated with fai is high, even in an asymptomatic young population. this high frequency of features may suggest that the threshold values have been set too low in the current literature, or that these findings may reflect anatomical variation rather than true pathological abnormalities. background femoroacetabular impingement (fai) is one ...

background and aim: different tests have been developed to evaluate reduced ability of speech perception in noise, and the words-in-noise test is one of the easiest ones in terms of speech materials. this study aimed to develop and determine the validity and reliability of the persian version of the words-in-noise (win) test for 7 to 12-year-old children. methods: this research is a tool-making...

Given that such a large and growing share of young adults ages 19 to 26 lacks health insurance coverage, increasing policy attention has been focused on addressing coverage gaps among young adults. Fully 10.3 million young adults—or one in three (32 percent)—lack health insurance coverage. While young adults constitute 18 percent of the adult population, they make up 28 percent of the uninsured...

We present an analysis of compact star clusters in deep Hubble Space Telescope Wide Field Planetary Camera 2 images of NGC 1275. Band R-band photometry of roughly 3000 clusters shows a bimodality in the B[R colors, suggesting that distinct old and young cluster populations are present. The small spread in the colors of the blue clusters is consistent with the hypothesis that they are a single-a...

The number of melanomas removed from Australians is increasing. Despite this, it has been reported that the incidence of melanoma is decreasing in the young Australian population. However, the denominator for these estimates includes individuals at low risk of melanoma, and the proportion of such individuals has changed over recent decades due to immigration. In this study, the incidence was ca...

BACKGROUND We assessed the feasibility of collecting urine samples for testing on genital Chlamydia trachomatis infection in a population-based survey, and prevalence of this infection among young people aged 18-25 in Croatia. In Croatia, as in the other countries of Eastern Europe, there is a lack of data on prevalence of C. trachomatis in the general population, including young adults. METH...